30996560 has 40 divisors (see below), whose sum is σ = 82363776. Its totient is φ = 10627200.

The previous prime is 30996551. The next prime is 30996587. The reversal of 30996560 is 6569903.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27116 + ... + 28235.

Almost surely, 2^30996560 is an apocalyptic number.

It is an amenable number.

30996560 is an abundant number, since it is smaller than the sum of its proper divisors (51367216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30996560 is a wasteful number, since it uses less digits than its factorization.

30996560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55371 (or 55365 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 30996560 is about 5567.4554331400. The cubic root of 30996560 is about 314.1264450787.

It can be divided in two parts, 309 and 96560, that added together give a palindrome (96869).

The spelling of 30996560 in words is "thirty million, nine hundred ninety-six thousand, five hundred sixty".